Resin composition for building materials and insulating glass

Abstract

An insulating glass includes two or more glass sheets forming an air space layer between them. The glass sheets are separated by a spacer made of a resin having a JIS A hardness of from 10 to 90 at 25° C. The resin is a thermoplastic composition including a butyl rubber and a crystalline polyolefin. The resin contains from 50 to 98 wt % butyl rubber, from 2 to 50 wt % crystalline polyolefin, and from 10 to 200 wt % inorganic fillers, based on the total amount of butyl rubber and crystalline polyolefin in the resin.

What is claimed is:  
     
       1. An insulating glass comprising two or more glass sheets and a spacer, wherein 
       solel the spacer separates the two or more glass sheets so as to form an air space layer between adjacent glass sheets;  
       the spacer consists of a thermoplastic resin composition having a JIS A hardness of from 10 to 90 at 25° C.;  
       the thermoplastic resin composition comprises butyl rubber, a crystalline polyolefin having a crystallinity of at least 50%, and inorganic fillers;  
       an amount of the butyl rubber in the thermoplastic resin composition ranges from 50 to 98 wt % based on a total amount of the butyl rubber and the crystalline polyolefin in the thermoplastic resin composition; and  
       an amount of the inorganic fillers in the thermoplastic resin composition ranges from 10 to 200 wt % based on the total amount of the butyl rubber and the crystalline polyolefm in the thermoplastic resin composition, wherein solely the spacer means that no other secondary sealing material or metal spacer is required. and primer treatment which may be applied as the case requires, is included.  
     
     
       2. The insulating glass according to claim  1 , wherein the thermoplastic resin composition has a creep compliance J of from 1×10 −10  (cm 2 /dyne) to 1×10 −5  (cm 2 /dyne) as measured after 5 minutes from initiation of a measurement in a shear deformation mode at 40° C. 
     
     
       3. The insulating glass according to claim  1 , wherein said thermoplastic resin composition comprises at least two types of thermoplastic resins, one of which is a hot-melt moldable rubber or elastomer, and a drying agent. 
     
     
       4. The insulating glass according to claim  1 , wherein said thermoplastic resin composition comprises the following components: 
       
         
           
                 
                 
                 
                 
               
                     
                     
                 
                     
                   Hot-melt moldable rubber or elastomer 
                   10 to 80 
                   wt % 
                 
                     
                   Thermoplastic resin other than said 
                   0 to 50 
                   wt % 
                 
                     
                   rubber or elastomer 
                 
                     
                   Tackifier 
                   0 to 15 
                   wt % 
                 
                     
                   Drying agent and additives 
                   10 to 60 
                   wt %. 
                 
                     
                     
                 
             
                
               
               
                
                
                
                
                
                
               
            
           
         
       
     
     
       5. The insulating glass according to claim  1 , wherein said thermoplastic resin composition comprises a butyl rubber and a crystalline polyolefin, wherein the proportion of the butyl rubber is from 50 to 98 wt %, and the proportion of the crystalline polyolefin is from 2 to 50 wt %, based on the total amount of the two. 
     
     
       6. The insulating glass according to claim  1 , wherein said thermoplastic resin composition comprises a butyl rubbery a crystalline polyolefin and an inorganic filler, wherein the proportion of the butyl type rubber is from 50 to 98 wt %, and the proportion of the crystalline polyolefin is from 2 to 50 wt %, based on the total amount of the butyl rubber and the crystalline polyolefin, and the proportion of the inorganic filler is at most 200 parts by weight per 100 parts by weight of the sum of the butyl rubber and the crystalline polyolefin. 
     
     
       7. The insulating glass according to claim  8 , wherein the crystalline polyolefin is at least one polymer selected from polyethylene, polypropylene and their modified products. 
     
     
       8. The insulating glass according to claim  4 , wherein a the moisture permeation constant of the thermoplastic resin other than said rubber or elastomer, or a moisture permeation constant of the crystalline polyolefin, is at most 3000×10 −13  cm 3 ·cm/cm 2 ·sec·Pa. 
     
     
       9. The insulating glass according to claim  3 , wherein a moisture permeation constant of said hot-melt moldable rubber or elastomer, or a moisture permeation constant of the butyl rubber, is at most 3000×10 −13  cm 3 ·cm/cm 2 ·sec·Pa. 
     
     
       10. The insulating glass according to claim  1 , wherein a moisture permeation constant of said thermoplastic resin composition is at most 5000×10 −13  cm 3 ·cm/cm 2 ·sec·Pa. 
     
     
       11. A method of making an insulating glass, the method comprising 
       mixing a thermoplastic composition comprising butyl rubber, a crystalline polyolefin and inorganic fillers;  
       molding the thermoplastic composition to form a spacer;  
       separating at least two glass sheets with the spacer; and  
       forming the insulating glass of claim  1 .  
     
     
       12. A method of using an insulating glass, the method comprising installing the insulating glass of claim  1  in a building.